package Tool;

import java.util.Random;

public class Plane implements Vehicle{

	@Override
	public int speedUp() {
		return how();
	}
	public static int how(){
		int [] a = {12,13,14,15};
		Random suiji = new Random();
		int x = suiji.nextInt(4);
		int b = a[x];
		return b;
		
		
	}
	

}
